DNS (Domain Name Server) Explained to Dummies – How to Increase the speed Of your Internet
Domain Name Server also called DNS, are the angels at work behind the seen. May be you have never heard about it but believe me, you are using it everyday while accessing a Web address in a Browser or Sending Email messages or using Instant messengers or even sending a tweet using your favorite Desktop tweet client.
To get more technical about DNS, Domain Name Server are the servers that resolve the web address your Browser or desktop client is trying to access. This Servers unlike our desktops are very powerful and function only to resolve the Web Address to IP address and directing us to the specified location. This servers perform some complex functions due to the complexity and vastness of the internet world.
So why should you be concerned with it,well there is a catch in it. Your internet service provider would be giving a very low grade DNS at your disposal. So the resolution of the web address is considerably slow compared to other faster DNS. The Worry ends here, there are several public DNS providers who provide free Dns solutions that many corporates use.
Before Diving into providing the Public Dns Address for those who dont know how to change it, follow these Instructions while others can skip this Tutorial.
Step By Step Guide – How to change the Domain name server Address on your computer, its Brought to you by Open DNS. The Step By Step Guide is offered for different Operating Systems, so choose the Guide that is suitable for your Operating System.
Some of the Free Open DNS Providers are listed Below and at the end really pushing the Speed of your internet to the maximum.
OpenDNS
Primary 208.67.222.222
Secondary 208.67.220.220
Google
Primary 8.8.8.8
Secondary 8.8.4.4
ScrubIt
Primary 67.138.54.100
Secondary 207.225.209.66
Dnsadvantage
Primary 156.154.70.1
Secondary 156.154.71.1
vnsc-pri.sys.gtei.net
Primary 4.2.2.1
Secondary 4.2.2.2
Alternate 4.2.2.3, 4.2.2.4, 4.2.2.5, 4.2.2.6
So that was the list, that provides DNS addresses of some famous DNS providers but wait how do u benchmark which is the best which is not. This comes from google code project which provides the benchmarking tool for all the Famous DNS Providers as well as your ISP. So try this Benchmarking tool called Namebench.
Some of the Screen shots for Namebench.

There are different versions of it for Mac OS, Windows platform and Linux. So try the Platform that suits you.
Note at last: My Benchmark gave me 66% better Speed from my last DNS.
Check out this articles on Techcrunch,
Primary 208.67.222.222
Secondary 208.67.220.220
Google
Primary 8.8.8.8
Secondary 8.8.4.4
ScrubIt
Primary 67.138.54.100
Secondary 207.225.209.66
Dnsadvantage
Primary 156.154.70.1
Secondary 156.154.71.1
vnsc-pri.sys.gtei.net
Primary 4.2.2.1
Secondary 4.2.2.2
Alternate 4.2.2.3, 4.2.2.4, 4.2.2.5, 4.2.2.6
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02. Jan, 2010 


Thanks for this list, never heard about ScrubIt and DNSadvantage, I changed my computer settings to these nameservers: 4.2.2.2 and 4.2.2.3 and for the moment works fine. All the best.
nice.. keep checking the best setting by using namebench.. it fluctuates a lot..